ENTRY 23043 20211109 23052304300000001 SUBENT 23043001 20211109 23052304300100001 BIB 15 49 2304300100002 TITLE Neutron capture cross-section of Ge-76 2304300100003 AUTHOR (J.Marganiec, I.Dillmann, C.Domingo Pardo, P.Grabmayer,2304300100004 F.Kaeppeler) 2304300100005 REFERENCE (J,JP/G,35,014022,2008) 2304300100006 #doi:10.1088/0954-3899/35/1/014022 2304300100007 (R,INDC(GER)-0053,2021) Revised values of Karlsruhe 2304300100008 cross sections. 2304300100009 INSTITUTE (2GERKFK) J.Marganiec, I.Dillmann, C.Domingo-Pardo 2304300100010 (3POLLOU) J.Marganiec 2304300100011 (2GERTUE) P.Grabmayer 2304300100012 FACILITY (VDG,2GERKFK) Karlsruhe 3.7MV Van de Graaff accelerator2304300100013 in DC mode, beam currents between 80 and 100 uA. 2304300100014 INC-SOURCE (P-LI7) Neutron produced via Li-7(p,n)Be-7 reaction on 2304300100015 LiF targets. Proton beam about 100 uA. Proton 2304300100016 energy was adjusted at 1912 keV. Neutrons were 2304300100017 kinematically collimated in forward cone of 120 deg 2304300100018 opening angle. Yielding neutron source strength 2304300100019 10**8 - 10**9 1/sec. 2304300100020 INC-SPECT Neutron spectrum corresponds closely to quasi-stellar 2304300100021 neutron spectrum of Maxwell-Boltzman distribution for 2304300100022 thermal energy kT=25 keV. 2304300100023 SAMPLE Natural GeO2 with 7.83% of Ge-76.Pellets of 6 and 10mm2304300100024 diameter sandwiched between two gold foils. 2304300100025 Samples characteristics and activation times: 2304300100026 Number of Diameter Thickness Mass Activation time 2304300100027 sample mm mm mg hr 2304300100028 1 10 1.47 294.44 7.02 2304300100029 2 10 0.69 119.85 16.65 2304300100030 3 10 0.41 66.10 8.08 2304300100031 4 6 1.72 118.54 7.38 2304300100032 5 6 0.40 34.69 15.15 2304300100033 MONITOR (79-AU-197(N,G)79-AU-198,,SIG,,SPA) For neutron flux. 2304300100034 DECAY-DATA (32-GE-77-G,11.3HR,DG,264.44,0.539,DG,215.50,0.286, 2304300100035 DG,211.03,0.308) 2304300100036 Decay data for Ge-77-G from NuDat2 were used - 2304300100037 hhtp://www.nndc.bnl.gov/nudat2/indx dec.jsp 2304300100038 REL-REF (R,,Z.Chunmei,J,NDS,95,59,2002) Au-198 decay data 2304300100039 DETECTOR (HPGE) shielded high purity Ge detector was used to 2304300100040 measure the induced activity in Ge samples and gold 2304300100041 foils. 2304300100042 METHOD (ACTIV,GSPEC) 2304300100043 ERR-ANALYS (ERR-1) Error of Ge-77 264.44 keV gamma line intensity 2304300100044 (ERR-2) Error of Ge-77 215.50 keV gamma line intensity 2304300100045 (ERR-3) Error of Ge-77 211.03 keV gamma line intensity 2304300100046 HISTORY (20081122C) M.M. 2304300100047 (20100713U) M.M. DOI was corrected. 2304300100048 (20120120A) NDS(VZ): REL-REF: ND/B->NDS 2304300100049 (20211109A) SD: Corrections in all Subents. 2304300100050 Subents 004, 005 added. 2304300100051 ENDBIB 49 0 2304300100052 COMMON 3 3 2304300100053 ERR-1 ERR-2 ERR-3 2304300100054 PER-CENT PER-CENT PER-CENT 2304300100055 0.5 0.9 0.1 2304300100056 ENDCOMMON 3 0 2304300100057 ENDSUBENT 56 0 2304300199999 SUBENT 23043002 20211109 23052304300200001 BIB 8 31 2304300200002 REACTION (32-GE-76(N,G)32-GE-77-G,,SIG,,SPA) 2304300200003 ANALYSIS Average exp. cross section was determine from five 2304300200004 values of different samples : 2304300200005 11.3mb+-4.2%, 11.5mb+-4.3%, 11.3mb+-3.8%, 2304300200006 11.6mb+-3.7%, 11.3+-3.8%. 2304300200007 CORRECTION For variations in neutron flux and for decay of 2304300200008 activated nuclei during irradiation time. 2304300200009 For gamma-ray self absorption in sample. 2304300200010 DECAY-MON (79-AU-198-G,,DG,411.8,0.9558) 2304300200011 MONIT-REF (22099002,W.Ratynski+,J,PR/C,37,595,1988) 2304300200012 ERR-ANALYS (ERR-T) Total uncertainty 3.8%. 2304300200013 Main contributions in total uncertainty: 2304300200014 (MONIT-ERR) Au standard uncertainty 2.0%. 2304300200015 (ERR-S,0.7,1.8) Counting statistic uncertainty 0.7-1.8%2304300200016 (ERR-4) Error of Au-198 411.8 keV gamma line intensity 2304300200017 (ERR-5) Uncertainty of detector efficiency 2.0% 2304300200018 (ERR-6) Uncertainty of gamma self-absorption in sample 2304300200019 0.03%. 2304300200020 (ERR-8,0.93,3.25) -Uncertainty of gamma-ray intensity 2304300200021 per decay 0.93 - 3.25%. 2304300200022 (ERR-9,0.05,0.13) -Uncertainty due to irradiation 2304300200023 history, time factor Fb 0.05-0.13%. 2304300200024 (ERR-7) Uncertainty of half-life 0.09%. 2304300200025 Error of sample thickness 0.01 mm. 2304300200026 Error of sample mass 0.01 mg. 2304300200027 Error of activation time 0.02 hour. 2304300200028 STATUS (TABLE) Table 2 from J.Phys.,G35(2008)014022 2304300200029 (SPSDD,23043004) Renormalized. 2304300200030 HISTORY (20211109A) SD: SF8=MXW -> SPA in REACTION code. 2304300200031 BIB updated. MONIT/ERR added. Subent superseded. 2304300200032 KT -> KT-DUMMY. 2304300200033 ENDBIB 31 0 2304300200034 COMMON 4 3 2304300200035 ERR-4 ERR-5 ERR-6 ERR-7 2304300200036 PER-CENT PER-CENT PER-CENT PER-CENT 2304300200037 0.12 2.0 0.03 0.09 2304300200038 ENDCOMMON 3 0 2304300200039 DATA 5 1 2304300200040 KT-DUMMY DATA ERR-T MONIT MONIT-ERR 2304300200041 KEV MB MB MB MB 2304300200042 25. 11.4 0.4 586. 8. 2304300200043 ENDDATA 3 0 2304300200044 ENDSUBENT 43 0 2304300299999 SUBENT 23043003 20211109 23052304300300001 BIB 7 10 2304300300002 REACTION (32-GE-76(N,G)32-GE-77-G,,SIG,,MXW,DERIV) 2304300300003 ANALYSIS Measured neutron capture cross section was extrapolated2304300300004 to kT=30 keV. 2304300300005 DECAY-MON (79-AU-198-G,,DG,411.8,0.9558) 2304300300006 MONIT-REF (22099002,W.Ratynski+,J,PR/C,37,595,1988) 2304300300007 ERR-ANALYS (DATA-ERR) Error not specified, probably total. 2304300300008 STATUS (TABLE) Text on p.4 from J.Phys.,G35(2008)014022 2304300300009 (DEP,23043002) 2304300300010 (SPSDD,23043005) Renormalized. 2304300300011 HISTORY (20211109A) SD: BIB updated. Subent superseded. 2304300300012 ENDBIB 10 0 2304300300013 NOCOMMON 0 0 2304300300014 DATA 3 1 2304300300015 KT DATA DATA-ERR 2304300300016 KEV MB MB 2304300300017 30. 12.4 0.7 2304300300018 ENDDATA 3 0 2304300300019 ENDSUBENT 18 0 2304300399999 SUBENT 23043004 20211109 23052304300400001 BIB 8 32 2304300400002 REACTION 1((32-GE-76(N,G)32-GE-77-G,,SIG,,SPA)/ 2304300400003 (79-AU-197(N,G)79-AU-198,,SIG,,SPA)) 2304300400004 2(32-GE-76(N,G)32-GE-77-G,,SIG,,SPA) 2304300400005 ANALYSIS Average exp. cross section was determine from five 2304300400006 values of different samples : 2304300400007 11.3mb+-4.2%, 11.5mb+-4.3%, 11.3mb+-3.8%, 2304300400008 11.6mb+-3.7%, 11.3+-3.8%. 2304300400009 Cross section value in Subent 23043.002 is 2304300400010 renormalized for new gold cross section 2304300400011 CORRECTION For variations in neutron flux and for decay of 2304300400012 activated nuclei during irradiation time. 2304300400013 For gamma-ray self absorption in sample. 2304300400014 Correction for revised gold standard: 622.7/586 =1.062 2304300400015 DECAY-MON (79-AU-198-G,3881.0MIN,DG,411.80,0.9558) 2304300400016 MONIT-REF (,R.Reifarth+,J,EPJ/P,133,424,2018) 2304300400017 ERR-ANALYS (ERR-T) Total uncertainty 3.8%. 2304300400018 Main contributions in total uncertainty: 2304300400019 (MONIT-ERR) Au standard uncertainty 1.0%. 2304300400020 ERR-S -Counting statistic uncertainty 0.7-1.8%. 2304300400021 (ERR-5) Uncertainty of detector efficiency 2.0% . 2304300400022 (ERR-6) Uncertainty of gamma self-absorption in sample 2304300400023 0.03%. 2304300400024 (ERR-8,0.93,3.25) -Uncertainty of gamma-ray intensity 2304300400025 per decay 0.93 - 3.25%. 2304300400026 (ERR-9,0.05,0.13) -Uncertainty due to irradiation 2304300400027 history, time factor Fb 0.05-0.13%. 2304300400028 (ERR-7) Uncertainty of half-life 0.09%. 2304300400029 Error of sample thickness 0.01 mm. 2304300400030 Error of sample mass 0.01 mg. 2304300400031 Error of activation time 0.02 hour. 2304300400032 STATUS (TABLE) Table on p.299 of INDC(GER)-0053 2304300400033 HISTORY (20211109C) SD 2304300400034 ENDBIB 32 0 2304300400035 COMMON 5 3 2304300400036 MONIT MONIT-ERR ERR-5 ERR-6 ERR-7 2304300400037 MB PER-CENT PER-CENT PER-CENT PER-CENT 2304300400038 622.7 1.0 2.0 0.03 0.09 2304300400039 ENDCOMMON 3 0 2304300400040 DATA 5 1 2304300400041 KT-DUMMY DATA 1ERR-T 1DATA 2ERR-T 2 2304300400042 KEV NO-DIM NO-DIM MB MB 2304300400043 25. 0.0195 0.0007 12.1 0.4 2304300400044 ENDDATA 3 0 2304300400045 ENDSUBENT 44 0 2304300499999 SUBENT 23043005 20211109 23052304300500001 BIB 6 10 2304300500002 REACTION (32-GE-76(N,G)32-GE-77-G,,SIG,,MXW,DERIV) 2304300500003 ANALYSIS Measured neutron capture cross section was extrapolated2304300500004 to kT=30 keV. 2304300500005 Cross section value in Subent 23043.003 is 2304300500006 renormalized for new gold cross section 2304300500007 CORRECTION Correction for revised gold standard: 622.7/586 =1.0622304300500008 ERR-ANALYS (DATA-ERR) Error not specified, probably total. 2304300500009 STATUS (TABLE) Table on p.300 of INDC(GER)-0053 2304300500010 (DEP,23043002) 2304300500011 HISTORY (20211109C) SD 2304300500012 ENDBIB 10 0 2304300500013 NOCOMMON 0 0 2304300500014 DATA 3 1 2304300500015 KT DATA DATA-ERR 2304300500016 KEV MB MB 2304300500017 30. 13.2 0.7 2304300500018 ENDDATA 3 0 2304300500019 ENDSUBENT 18 0 2304300599999 ENDENTRY 5 0 2304399999999